31113444435113 has 2 divisors, whose sum is σ = 31113444435114. Its totient is φ = 31113444435112.

The previous prime is 31113444435053. The next prime is 31113444435133. The reversal of 31113444435113 is 31153444431113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15972108166144 + 15141336268969 = 3996512^2 + 3891187^2 .

It is a cyclic number.

It is not a de Polignac number, because 31113444435113 - 2²⁸ = 31113175999657 is a prime.

It is not a weakly prime, because it can be changed into another prime (31113444435133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556722217556 + 15556722217557.

It is an arithmetic number, because the mean of its divisors is an integer number (15556722217557).

Almost surely, 2^{31113444435113} is an apocalyptic number.

It is an amenable number.

31113444435113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113444435113 is an equidigital number, since it uses as much as digits as its factorization.

31113444435113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

Adding to 31113444435113 its reverse (31153444431113), we get a palindrome (62266888866226).

It can be divided in two parts, 3111344 and 4435113, that added together give a palindrome (7546457).

The spelling of 31113444435113 in words is "thirty-one trillion, one hundred thirteen billion, four hundred forty-four million, four hundred thirty-five thousand, one hundred thirteen".